diff --git a/main.js b/main.js
index 769642f..034d02c 100644
--- a/main.js
+++ b/main.js
@@ -1164,6 +1164,10 @@ var NeoGDSync = class extends import_obsidian5.Plugin {
     this.pendingOps = (_b = saved == null ? void 0 : saved.pendingOps) != null ? _b : {};
     this.conflicts = (_c = saved == null ? void 0 : saved.conflicts) != null ? _c : [];
     if (this.snapshot) this.snapshot.setRaw(saved == null ? void 0 : saved.snapshot);
+    if (this.settings.authProxyUrl === "https://ogd.richardxiong.com/api/access") {
+      this.settings.authProxyUrl = DEFAULT_SETTINGS.authProxyUrl;
+      await this.saveSettings();
+    }
   }
   async saveSettings() {
     await this.saveData({
diff --git a/manifest.json b/manifest.json
index 23c4214..bd11d2d 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,7 +1,7 @@
 {
   "id": "neogdsync",
   "name": "NeoGDSync",
-  "version": "1.0.3",
+  "version": "1.0.4",
   "minAppVersion": "1.6.0",
   "description": "Lightweight Google Drive sync with path-based index, conflict detection, and smart/push/pull modes.",
   "author": "martinlegend",
diff --git a/src/main.ts b/src/main.ts
index 24cffd9..43d1a58 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -292,6 +292,12 @@ export default class NeoGDSync extends Plugin {
     this.pendingOps = saved?.pendingOps ?? {};
     this.conflicts  = saved?.conflicts ?? [];
     if (this.snapshot) this.snapshot.setRaw(saved?.snapshot);
+
+    // Migrate: replace legacy third-party proxy URL with self-hosted Worker
+    if (this.settings.authProxyUrl === 'https://ogd.richardxiong.com/api/access') {
+      this.settings.authProxyUrl = DEFAULT_SETTINGS.authProxyUrl;
+      await this.saveSettings();
+    }
   }
 
   async saveSettings() {
diff --git a/versions.json b/versions.json
index f47b7d1..5254589 100644
--- a/versions.json
+++ b/versions.json
@@ -14,5 +14,6 @@
   "1.0.0": "1.6.0",
   "1.0.1": "1.6.0",
   "1.0.2": "1.6.0",
-  "1.0.3": "1.6.0"
+  "1.0.3": "1.6.0",
+  "1.0.4": "1.6.0"
 }